Katrina C. Chin Loy, M.D.
NPI 1871851188ActiveIndividual· Ophthalmology· Washington, DC
Ophthalmology (M.D.) in Washington, District of Columbia, trained at Howard University College of Medicine (class of 2012). In 2024 Medicare paid $61,019 for 314 patients, and Part D covered 1,026 of their prescriptions, 69% of them generic. Mallinckrodt Hospital Products Inc. was the largest of 13 companies reporting payments in 2025, $2,169 in all, mostly food and beverage.
Overview
| NPI | 1871851188 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Apr 25, 2012 |
| Last updated in NPPES | Jul 13, 2016 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Ophthalmology Primary | 207W00000X | MD044463 | DC |
| Student in an Organized Health Care Education/Training Program | 390200000X | — | — |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Ophthalmology (DC) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 314 |
|---|---|
| Services billed | 695 across 26 procedure codes |
| Paid by Medicare | $61,019 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,026 · 1,583 30-day fills |
|---|---|
| Patients | 217 |
| Total drug cost | $55,298 |
| Generic share | 69% of claims |
Education and affiliations
| Medical school | Howard University College of Medicine |
|---|---|
| Graduation year | 2012 |
| Medicare specialty | Ophthalmology |
Medical groups
- Howard UniversityWashington, DC · 181 clinicians
- Visionmd, LLCGlenn Dale, MD · 4 clinicians
Hospital affiliation
- Howard University Hospital CorpWashington, DC
Industry payments (Open Payments)
- 2025$2,169 · 42 payments from 13 companies
- 2024$1,107 · 19 payments from 10 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Mallinckrodt Hospital Products Inc. | $664.58 | 14 |
| Glaukos Corporation | $427.28 | 5 |
| Amgen Inc. | $311.25 | 6 |
| Tarsus Pharmaceuticals, Inc. | $213.20 | 4 |
| Genentech USA, Inc. | $126.88 | 1 |
What the 2025 payments were for
- Food and Beverage$2,081 · 41 payments
- Education$87.70 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other Ophthalmology providers in Washington
- 1700949021
- 1669402491
- 1548720394
- 1922653369
- 1396975157
- 1760685598
- 1225428865
- 1629242565
- 1750350583
- 1720180276
- 1316172265
- 1194802199